Index: /var/tmp/portage/www-client/firefox-40.0.3/work/mozilla-release/gfx/layers/composite/LayerManagerComposite.cpp
===================================================================
--- .orig/gfx/layers/composite/LayerManagerComposite.cpp
+++ patched/gfx/layers/composite/LayerManagerComposite.cpp
@@ -619,6 +619,7 @@ LayerManagerComposite::PopGroupForLayerE
 void
 LayerManagerComposite::Render()
 {
+  NS_WARNING("In LayerManagerComposite::Render()");
   PROFILER_LABEL("LayerManagerComposite", "Render",
     js::ProfileEntry::Category::GRAPHICS);
 
